Dalton’s Law:Dilute hydrochloric ácidos added to a 0.500 g sample of an alloy containing zinc and copper.The has evolved is collected over water using an apparatus and the following data were obtained: Barometric pressure(corrected) 737.1 mm Hg Temperature of the gas 25 degrees C Aqueous vapor pressure @ 25 degrees C 23.8 mm Hg Difference in water levels inside and outside tube 109 mm H2O The mm H2O per 1 mm Hg 13.6 mm H2O Volume of gas collected 81.3mL Calculate the percentage of zinc in the alloy

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Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.